Great Blue Slot Review

Great Blue is a Playtech slot that was introduced in 2013 and is the perfect reel-spinning adventure for those that love the open water and are fascinated by the depths of the ocean.

Did you know that we human beings have explored the Moon and the planet Mars more than we have our own oceans here on Earth? We’ve been able to map out the surface of the Moon as well as Mars, but due to challenges such as immense atmospheric pressure, darkness, and extreme temperatures, we know relatively little about the oceans and the species that live in them. In fact, we seem to find new deep-ocean-dwelling species regularly.

In Playtech’s Great Blue slot, the ocean isn’t as daunting as explained above. The reel set seems to be located within the more accessible upper layers of the ocean, where sunlight can still penetrate. Here, various species, such as orcas, sharks, turtles, starfish, etc., thrive and even act as high-paying symbols for the sake of the game.

Great Blue is a simple slot with a couple of awesome bonus rounds. It’s great for beginners, but seasoned slot enthusiasts will also enjoy it thoroughly. In this review, we will tell you everything you need to know about this game and how to play it well and emerge from underwater with a fortune!

Our Ratings : Ratings

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Great Blue Slots Info 
Provider Playtech
Release Date   2017
RTP  95.14%
Reels 5
Paylines 25
Progressive  No
Max Payout  500x
Betting Range  0.50 to 500
  • The first step is to basically set up your bet. There are two ways to control how much you bet in total per spin. First, you need to configure how many lines you wish to bet on. You can choose anywhere from 1 to 25 lines. Next, you need to set the bet amount per line, and this can range from 0.01 coins to 2.00 coins.
  • So basically, if you have the minimum line bet configured and only bet on one line, each spin will only cost you a meagre 0.01 coins. On the other hand, if you choose to bet the maximum line bet of 2.00 coins on all 25 lines, then each spin will cost you 50 coins. Keep in mind that the more you bet, the more you can win. It must be noted that only the highest win pays per line, and winning lines pay left to right, except in the case of the scatter, which pays any.
  • The next step is simply to click on or tap the pink “Spin” button. A melody will play briefly for a couple of seconds as the reels spin, and the melody stops as the reels come to a halt. If there are any winning lines, they will be highlighted with coloured lines going across the reels.
  • To play well, it would help to learn the different symbols and the value attached to them. For instance, the killer whale is wild, and the scatter is represented by the shining oyster in the pink shell. The wild symbol can be used in place of any other symbol to complete a winning combination, and so whenever you land a wild, it’s a good thing. The wild can also show up in a stacked manner, which is even better for you.
  • The scatter symbol is what triggers the free-spins bonus. You need to land at least 3 or more scatters anywhere on the reels, and you will be rewarded with 8 free spins, and they are played at a 2x multiplier too!
  • If you land five scatters, you can pick any two of them for a chance to win even more free spins and/or multipliers. You can win up to 33 free spins or up to a 15x multiplier!
  • After a winning spin, you have the option to gamble your winnings. Guess the correct colour of the next card (red or black) to double your payout. This feature can be played again and again, but it ends when you choose wrong and lose.


The theme, of course, is an underwater world that is depicted in overwhelmingly blue fashion. In the backdrop are pristine blue waters, and you can see some seaweed growing as well as bubbles floating up to the surface. The reels too are painted blue, and they have both low-paying symbols (such as A, K, 9, 10, J, and Q) and high-paying symbols (such as the orca, turtles, sharks, fish, sea horse, starfish, etc.).

The ”spin” button is highlighted in pink to make it stand out, and so is the “Info” button. The layout is traditional. It has five reels. Line numbers are visible on both sides of the reels. This helps players see the different paylines easily. The design is easy to use. All of the important controls are at the bottom of the screen. There are buttons for adjusting lines, line bets, and total bets. Displays for the current bet and winnings are clear. The ‘SPIN’ and ‘AUTO SPIN’ buttons are big and easy to use.


  • Wild Symbol: The wild symbol in Great Blue is the killer whale, or orca. It can replace any other symbol except the scatter to help form winning combinations. For example, if you have two matching turtle symbols on a payline and a Wild symbol appears next to them, the Wild acts as a third turtle, and you win as if three turtles lined up. Moreover, when the Wild helps make a win, it also doubles the payout for that win as well.
  • Scatter Symbol: The scatter symbol is the pink seashell with a glowing white pearl. If you land three or more scatters anywhere on the reels, it triggers the Free Spins bonus. You do not need the scatters to be on a single payline. They can appear scattered across any of the reels. For instance, if you get a scatter on reels one, three, and five, the bonus round is still triggered.
  • Sea Shells Bonus: Triggered by landing three or more scatter symbols, the Sea Shells Bonus starts with a scene of several closed sea shells. You get to pick two shells. Each shell reveals additional free spins, or multipliers. Suppose you choose a shell, and it reveals 8 extra free spins, and the second shell provides a 2x multiplier. This means any win during the free spins is doubled, and you have more spins to increase your earnings.
  • Gamble Feature: After any win, you can choose to further gamble your winnings with a simple guessing game where you need to guess if the card that will be revealed is going to be red or black. You are taken to a new screen with a deck of cards, and this is where you make your prediction. If you guess correctly, your winnings double, and if you guess incorrectly, you lose what you’d just won.


Great Blue Slot has an RTP (return to player) of 94.3%, but it can go up to 96% depending on the specific casino you are playing at. RTP is basically a number that tells you how much money the slot pays back to players over extended periods of time. In this case, 94.3 signifies that for every $100 wagered, Great Blue Slot pays back $94.3 over time.

The game is classified as having high volatility. This means wins are not very frequent but are usually significant when they do occur. If you like big wins instead of many trivial ones, high-volatility slots are a good option for you.

The maximum win is 10,000 times your stake in a single spin if you land five killer whale symbols at the same time.


Great Blue is a simple yet fun slot with an impressive payout potential. This slot is loved by many because of how easy it is to play and how quickly you can learn the ropes and get started. Some love it for the underwater theme. It’s a great game, and the inclusion of special bonus rounds such as the sea shell bonus and the gamble feature make it even better! Even if you’re on a tight budget, you can spin at just 0.01 coins per spin or go big with 50 coins per spin; it’s totally up to you. This slot certainly gets our thumbs up, and we would recommend it to all of our readers.


What is the minimum bet for Great Blue?

The minimum bet you can place per spin is just 0.01 coins, but you will only be betting on one line out of 25.

How do I get Free Spins in Great Blue?

To trigger the Free Spins in Great Blue, you must land three or more Scatter symbols (seashells) anywhere on the reels.

What is the maximum payout in Great Blue?

The maximum payout in Great Blue is 10,000 times your bet. This happens when you land 5 killer whale symbols at the same time.

How does the gamble feature work?

The gamble feature is simple and you can play it whenever you win. Basically, after any win, you have the choice to gamble the win by guessing whether the card that will be revealed is going to be red or black. If you guess right, your winnings are doubled and if you guess wrong, you lose your winnings.


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